Report Automation PowerShell REST API

Hi,

I've been working with the Power BI PowerShell model PowerBIPS to try and do some simple automation, but am currently failing.  I was looking for a way of importing a templated PBIX (or PBIT) file, then loading it with data, ideally all through PowerShell.  It seems you can't automate the upload of a PBIT file, so was looking to import a PBIX file and cleaning down the tables.   When the file is imported, the dataset doesnt seem 100% accessible through the REST API?   any help on this would be greatly recieve

Can I use the REST API o import a pbxi file, then update table rows?  Or if i create a dataset through the REST API and populate tables with data, how can I automate the creation of a report ?

Thanks 

Alex